CN115533177A - A centrally positioned metalworking tool - Google Patents

Abstract

The invention relates to the technical field of metal processing cutters, in particular to a centrally positioned metal processing cutter which comprises a cutter bar, a hard alloy cutter head and a fixing bolt, wherein the cutter bar is fixedly connected with the cutter bar; the cutter bar is provided with a fixing groove; the fixing groove is composed of a cylindrical hole and a threaded hole which are coaxially arranged; the hard alloy tool bit is provided with a through hole; the through hole and the cylindrical hole are coaxially arranged; the fixing bolt comprises a cylindrical part and a threaded part which are coaxially arranged; the cylindrical part is arranged between the cylindrical hole and the through hole; the thread part is in threaded connection with the threaded hole. According to the invention, the threaded hole, the cylindrical hole and the through hole are coaxially arranged, and the threaded part and the cylindrical part are coaxially arranged, so that the cylindrical hole plays a role of central positioning for the cylindrical part of the fixing bolt, thereby effectively preventing the hard alloy tool bit and the tool bar from shifting, improving the processing precision and efficiency, and greatly saving the cost of the tool through a connection mode of the hard alloy tool bit and the tool bar.

Description

A centrally positioned metalworking tool

technical field

The invention relates to the technical field of metal processing tools, in particular to a centrally positioned metal processing tool.

Background technique

In mechanical processing, it is common to use machine tools to drive tool rotation to process workpieces, such as turning, milling, grinding and other operations using machine tools. As an indispensable tool for mechanical processing, cutting tools are mainly made of cemented carbide, and solid carbide cutting tools are required in the field of high-precision machining. As a consumable tool, the use of integral cemented carbide has good precision but high cost. In order to save processing costs, the linkable method of the tool holder and the cutter head is usually adopted. Generally, the cutter holder and the cutter head are set as a detachable structure. , only need to replace the cutter head participating in the processing during processing, thus saving a certain cost. However, in the traditional way, the bolt passes through the cutter head and is threaded with the cutter rod. During the thread connection, the connection is not in place, which leads to the offset between the cutter rod and the cutter head, and the tool jumps too much during the machining process. , although the cost is saved to a certain extent, the accuracy is poor, so it cannot replace the overall alloy tool to meet the processing of high-precision workpieces.

Contents of the invention

The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a metal processing tool with central positioning, which makes the structure of the tool stable and reliable, effectively improves the precision and life of tool processing, and can replace the overall alloy tool. It can meet the processing accuracy of high-precision workpieces and save processing costs at the same time.

The purpose of the present invention is achieved through the following technical solutions: a centrally positioned metal processing tool, including a tool holder, a carbide cutter head and a fixing bolt; the carbide cutter head is detachably connected to the cutter holder through the fixing bolt;

The bottom of the cutter bar is provided with a fixed groove; the fixed groove is composed of a cylindrical hole and a threaded hole; the threaded hole is set on the top of the cylindrical hole; The middle part of the alloy cutter head is provided with a perforation; the perforation is set concentrically with the cylindrical hole;

The fixing bolt includes a cylindrical part matched with the cylindrical hole and a threaded part connected with the cylindrical part; the cylindrical part and the threaded part are coaxially arranged; the cylindrical part is arranged between the cylindrical hole and the through hole; the threaded part Threaded connection with threaded hole.

The present invention is further provided that a head is provided at the end of the cylindrical part away from the threaded part; the cemented carbide cutter head is provided with a limiting cavity communicating with the perforation; the head is provided in the limiting cavity.

The present invention is further provided that the bottom end of the head is provided with a rotating groove; the rotating groove is provided with an arc block.

The present invention is further provided that the bottom of the tool rod is provided with a plurality of limiting grooves; the top of the cemented carbide cutter head is provided with a plurality of limiting blocks cooperating with the limiting grooves.

The present invention is further provided that the cross-sectional shape of the limiting groove and the limiting block are both arc-trapezoidal.

The present invention is further provided that a plurality of limiting slots are arranged rotationally symmetrically along the center of the tool rod; and a plurality of limiting blocks are arranged rotationally symmetrically along the center of the cemented carbide cutter head.

The present invention is further provided that the angles of two adjacent limiting slots are the same.

The present invention is further provided that the angles of two adjacent limit blocks are the same.

The present invention is further provided that a plurality of blades are arranged on the outer periphery of the cemented carbide cutter head; the plurality of blades are arranged rotationally symmetrically along the center of the cemented carbide cutter head; arc-shaped grooves are arranged between two adjacent blades.

Beneficial effects of the present invention: the present invention sets the threaded hole and the cylindrical hole at the same time, the threaded hole, the cylindrical hole and the perforation are coaxially arranged; It plays the role of central positioning on the cylindrical part of the fixing bolt, so that it can effectively prevent the deviation between the carbide cutter head and the tool holder, thereby causing damage to the workpiece, and improve the machining accuracy and efficiency. The connection method of high-quality alloy cutter head and cutter bar greatly saves the cost of the cutter.

Description of drawings

Utilize accompanying drawing to further illustrate the invention, but the embodiment in the accompanying drawing does not constitute any limitation to the present invention, for those of ordinary skill in the art, under the premise of not paying creative work, can also obtain other according to following accompanying drawing Attached picture.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an exploded view of the structure of the present invention;

Fig. 3 is a structural exploded view of another perspective of the present invention;

Fig. 4 is a sectional view of the present invention;

Fig. 5 is a sectional view of the present invention after hiding the fixing bolt;

Among them: 1. Cutter rod; 11. Cylindrical hole; 12. Threaded hole; 2. Carbide cutter head; 21. Perforation; 22. Limiting cavity; 31. Cylindrical part; 32. Thread part; 33. Head; 4, rotating groove; 41, arc block; 51, limit groove; 52, limit block; 6, blade; 61, arc groove.

detailed description

The present invention is further described in conjunction with the following examples.

It can be seen from Fig. 1 to Fig. 5 that a centrally positioned metal processing tool described in this embodiment includes a tool holder 1, a hard alloy cutter head 2 and a fixing bolt; The cutter bar 1 is detachably connected;

The bottom of the cutter bar 1 is provided with a fixed groove; the fixed groove is composed of a cylindrical hole 11 and a threaded hole 12; the threaded hole 12 is located on the top of the cylindrical hole 11; the cylindrical hole 11 is coaxial with the threaded hole 12 Center setting; the middle part of the cemented carbide cutter head 2 is provided with a perforation 21; the perforation 21 is set coaxially with the cylindrical hole 11;

The fixing bolt includes a cylindrical portion 31 cooperating with the cylindrical hole 11 and a threaded portion 32 connected with the cylindrical portion 31; the cylindrical portion 31 and the threaded portion 32 are arranged concentrically; Between the through holes 21; the threaded portion 32 is threadedly connected with the threaded holes.

Specifically, for the centrally positioned metal processing tool described in this embodiment, when installing, firstly, the threaded portion 32 of the fixing bolt passes through the perforation 21 of the hard alloy bit 2 and then enters into the fixing groove of the tool bar 1 , and threaded with the threaded hole 12 after passing through the cylindrical hole 11, in the process of threaded connection between the threaded part 32 and the threaded hole 12, the cylindrical part 31 of the fixing bolt enters the cylindrical hole 11, when the threaded part 32 and the threaded hole 12 are connected Finally, the cylindrical portion 31 is located between the cylindrical hole 11 and the perforation 21, thereby fixing the tool bar 1 and the carbide cutter head 2; 11 and the through hole 21 are coaxially arranged, and in addition, by setting the threaded part 32 and the cylindrical part 31, the threaded part 32 and the cylindrical part 31 are coaxially arranged, and the cylindrical hole 11 plays the role of centering the cylindrical part 31 of the fixing bolt, thereby It can effectively prevent the deviation between the carbide cutter head 2 and the cutter bar 1, thereby causing damage to the workpiece, improve the machining accuracy and efficiency, and greatly improve the The cost of cutting tools is saved.

A centrally positioned metal processing tool described in this embodiment, the end of the cylindrical part 31 away from the threaded part 32 is provided with a head 33; the hard alloy cutter head 2 is provided with a limiting cavity communicating with the perforation 21 22 ; the head 33 is located in the limiting cavity 22 . Through the above arrangement, the position of the bolt can be limited, preventing damage to the cemented carbide cutter head 2 and the cutter bar 1 caused by excessive rotation of the bolt.

In the centrally positioned metal processing tool described in this embodiment, the bottom end of the head 33 is provided with a rotating slot 4 ; the rotating slot 4 is provided with an arc block 41 . The above arrangement facilitates the rotation of the bolts, and the arc block 41 acts as a limit and prevents the bolts from being damaged.

A centrally positioned metal processing tool described in this embodiment, the bottom of the tool bar 1 is provided with a plurality of limiting grooves 51; the top of the cemented carbide cutter head 2 is provided with a plurality of limiting grooves 51 Cooperating limit block 52. The relative rotation between the cemented carbide cutter head 2 and the cutter bar 1 can be prevented by the above arrangement.

In the centrally positioned metal processing tool described in this embodiment, the cross-sectional shapes of the limiting groove 51 and the limiting block 52 are both arc-trapezoidal. Through the above arrangement, the position limiting effect between the cemented carbide cutter head 2 and the cutter rod 1 can be enhanced, and the relative rotation between the cemented carbide cutter head 2 and the cutter rod 1 can be further prevented.

In the centrally positioned metal processing tool described in this embodiment, a plurality of limiting slots 51 are arranged rotationally symmetrically along the center of the cutter bar 1 ; a plurality of limiting blocks 52 are arranged rotationally symmetrically along the center of the cemented carbide cutter head 2 . Through the above arrangement, the position limiting effect between the cemented carbide cutter head 2 and the cutter rod 1 can be enhanced, and the relative rotation between the cemented carbide cutter head 2 and the cutter rod 1 can be further prevented.

In the centrally positioned metal processing tool described in this embodiment, the angles of two adjacent limiting grooves 51 are the same. Through the above arrangement, the position limiting effect between the cemented carbide cutter head 2 and the cutter rod 1 can be enhanced, and the relative rotation between the cemented carbide cutter head 2 and the cutter rod 1 can be further prevented.

In the centrally positioned metal processing tool described in this embodiment, the angles of two adjacent limit blocks 52 are the same. Through the above arrangement, the position limiting effect between the cemented carbide cutter head 2 and the cutter rod 1 can be enhanced, and the relative rotation between the cemented carbide cutter head 2 and the cutter rod 1 can be further prevented.

In the centrally positioned metal processing tool described in this embodiment, a plurality of blades 6 are arranged on the outer periphery of the cemented carbide cutter head 2; the plurality of blades 6 are arranged rotationally symmetrically along the center of the cemented carbide cutter head 2; An arc-shaped groove 61 is provided between two adjacent blades 6 . Through the above arrangement, the cemented carbide cutter head 2 can process the product workpiece smoothly and evenly.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (9)

1. A center-positioned metalworking tool is characterized in that: it comprises a tool bar (1), a hard alloy cutter head (2) and a fixing bolt; (1) Detachable connection; The bottom of the cutter bar (1) is provided with a fixed groove; the fixed groove is composed of a cylindrical hole (11) and a threaded hole (12); the threaded hole (12) is located on the top of the cylindrical hole (11); The cylindrical hole (11) and the threaded hole (12) are coaxially arranged; the middle part of the hard alloy cutter head (2) is provided with a perforation (21); the perforation (21) is the same as the cylindrical hole (11) Axis setting; The fixing bolt includes a cylindrical part (31) matched with the cylindrical hole (11) and a threaded part (32) connected with the cylindrical part (31); the cylindrical part (31) and the threaded part (32) are coaxially arranged ; The cylindrical part (31) is set between the cylindrical hole (11) and the through hole (21); the threaded part (32) is threadedly connected with the threaded hole (12). 2. A centrally positioned metalworking tool according to claim 1, characterized in that: the end of the cylindrical part (31) away from the threaded part (32) is provided with a head (33); The cutter head (2) is provided with a limiting cavity (22) communicating with the perforation (21); the head (33) is arranged in the limiting cavity (22). 3. A centrally positioned metal processing tool according to claim 2, characterized in that: the bottom end of the head (33) is provided with a rotating groove (4); the rotating groove (4) is provided with a round Arc block (41). 4. A centrally positioned metalworking tool according to claim 1, characterized in that: the bottom of the tool bar (1) is provided with a plurality of limiting grooves (51); 2) The top is provided with a plurality of limit blocks (52) that cooperate with the limit grooves (51). 5. A centrally positioned metal processing tool according to claim 4, characterized in that: the cross-sectional shape of the limiting groove (51) and the limiting block (52) are both arc-trapezoidal. 6. A center-positioned metalworking tool according to claim 4, characterized in that: a plurality of limiting slots (51) are arranged symmetrically along the center of the cutter bar (1); a plurality of limiting blocks (52) It is arranged rotationally symmetrically along the center of the cemented carbide cutter head (2). 7. A centrally positioned metal processing tool according to claim 6, characterized in that the angles of two adjacent limiting grooves (51) are the same. 8. A centrally positioned metalworking tool according to claim 6, characterized in that the angles of two adjacent limiting blocks (52) are the same. 9. A centrally positioned metalworking tool according to claim 1, characterized in that: a plurality of blades (6) are arranged on the outer periphery of the carbide cutter head (2); a plurality of blades (6) are arranged along the The center of the cemented carbide cutter head (2) is arranged rotationally symmetrically; an arc-shaped groove (61) is arranged between two adjacent blades (6).

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